/* CoordShift — coordshift.ru */
:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --success: #16a34a;
    --danger: #dc2626;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* Header */
.header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}
.header .container { display: flex; align-items: center; justify-content: space-between; }
.logo { font-size: 1.4rem; font-weight: 700; color: var(--primary); text-decoration: none; }
.nav { display: flex; align-items: center; gap: 16px; }
.nav a { color: var(--text); text-decoration: none; font-weight: 500; }
.nav a:hover { color: var(--primary); }
.user-email { color: var(--text-muted); font-size: 0.9rem; }
.inline-form { display: inline; }

/* Main */
.main { flex: 1; padding: 40px 0; }

/* Footer */
.footer { padding: 20px 0; text-align: center; color: var(--text-muted); font-size: 0.85rem; border-top: 1px solid var(--border); }

/* Hero */
.hero { text-align: center; padding: 60px 0 40px; }
.hero h1 { font-size: 3rem; color: var(--primary); margin-bottom: 12px; }
.hero-subtitle { font-size: 1.3rem; color: var(--text-muted); margin-bottom: 16px; }
.hero-desc { max-width: 600px; margin: 0 auto 30px; color: var(--text-muted); }
.hero-note { margin-top: 12px; color: var(--text-muted); font-size: 0.9rem; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-lg { padding: 14px 32px; font-size: 1.1rem; }
.btn-sm { padding: 6px 14px; font-size: 0.85rem; }
.btn-link { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 0.9rem; }
.btn-link:hover { color: var(--danger); }

/* Cards */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

/* Features */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; margin-top: 40px; }
.feature-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; text-align: center; box-shadow: var(--shadow); }
.feature-card h3 { color: var(--primary); margin-bottom: 10px; }

/* Dashboard */
.dashboard-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; margin-top: 20px; }

/* Status */
.status { font-weight: 600; margin: 8px 0; }
.status-active { color: var(--success); }
.status-inactive { color: var(--text-muted); }
.status-note { color: var(--text-muted); font-size: 0.9rem; }

/* Forms */
.input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    margin-bottom: 12px;
    outline: none;
    transition: border 0.2s;
}
.input:focus { border-color: var(--primary); }
.input-sm { width: auto; max-width: 120px; }
.work-form { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-start; }
.work-form .input { flex: 1; min-width: 200px; margin-bottom: 0; }
.work-form .btn { white-space: nowrap; }
.link-form { display: flex; gap: 12px; margin-top: 12px; }
.link-form .input { flex: 1; margin-bottom: 0; }
.link-result { margin-top: 10px; font-weight: 500; }
.link-result.success { color: var(--success); }
.link-result.error { color: var(--danger); }

/* Tabs */
.tabs { display: flex; gap: 4px; margin-bottom: 20px; border-bottom: 2px solid var(--border); }
.tab {
    padding: 10px 20px;
    border: none;
    background: none;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all 0.2s;
}
.tab.active { color: var(--primary); border-bottom-color: var(--primary); }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* Result */
.result { margin-top: 16px; padding: 16px; border-radius: var(--radius); }
.result.hidden { display: none; }
.result.success { background: #f0fdf4; border: 1px solid #bbf7d0; }
.result.error { background: #fef2f2; border: 1px solid #fecaca; }
.result a { color: var(--primary); font-weight: 500; }

.hint { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 16px; }
.limits-info { margin-top: 20px; text-align: center; }

/* Admin */
.admin-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin: 20px 0; }
.stat-card { text-align: center; }
.stat-number { font-size: 2rem; font-weight: 700; color: var(--primary); }
.admin-charts { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 20px 0; }
.chart-card { min-height: 300px; }
.admin-controls { margin-bottom: 20px; }
.period-selector { display: flex; gap: 8px; }
.period-selector .btn.active { background: var(--primary); color: #fff; }

/* Spinner */
.spinner { display: inline-block; width: 20px; height: 20px; border: 2px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Responsive */
@media (max-width: 768px) {
    .container { padding: 0 12px; }

    /* Header */
    .header .container { flex-direction: column; gap: 10px; }
    .nav { flex-wrap: wrap; justify-content: center; gap: 10px; }
    .nav a { font-size: 0.9rem; }
    .user-email { display: block; text-align: center; width: 100%; font-size: 0.8rem; }
    .logo { font-size: 1.2rem; }

    /* Hero */
    .hero { padding: 30px 0 20px; }
    .hero h1 { font-size: 2rem; }
    .hero-subtitle { font-size: 1.1rem; }
    .hero-desc { font-size: 0.9rem; }

    /* Main */
    .main { padding: 20px 0; }

    /* Cards */
    .card { padding: 16px; }

    /* Dashboard */
    .dashboard-grid { grid-template-columns: 1fr; }

    /* Work page */
    .tabs { overflow-x: auto; gap: 0; }
    .tab { padding: 8px 14px; font-size: 0.9rem; white-space: nowrap; }
    .work-form { flex-direction: column; }
    .work-form .input { min-width: 100%; }
    .work-form .btn { width: 100%; }
    .input-sm { max-width: 100%; }

    /* Link form */
    .link-form { flex-direction: column; }
    .link-form .input { width: 100%; }

    /* Features */
    .feature-grid { grid-template-columns: 1fr; gap: 12px; }
    .feature-card { padding: 20px; }

    /* Admin */
    .admin-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .stat-number { font-size: 1.5rem; }
    .stat-card h4 { font-size: 0.8rem; }
    .admin-charts { grid-template-columns: 1fr; }
    .chart-card { min-height: 220px; }
    .period-selector { flex-wrap: wrap; }

    /* Buttons */
    .btn-lg { padding: 12px 24px; font-size: 1rem; width: 100%; text-align: center; }
}